This Stages Power meter is built on to a non-drive Cannondale Si crank arm specifically to pair with Cannondale's Hollowgram Si crank — 2014 or newer. The Stages Power meter will also mate to the Hollowgram SISL2 model crank.
This Stages Power meter is slimmer and up to 28% lower profile than their original meter. It's also sleeker, with a 17-percent reduction in frontal area, and they've made it stronger. The housing design increases the strength of the battery door and housing connection by 200-percent over the previous design.
- Accuracy: ± 2%
- Weight: Only adds 20gr to base crank arm
- Battery Life: 200+ hours (coin cell: CR2032)
- Power range (Watts): 0 to 2500
- Cadence range (rpm): 20-220
- Water resistance rating: IPX7
- Frame Compatibility: Most frames, see fit guide in the Stages Support section
- Device Compatibility: ANT+, Bluetooth Smart Ready
- Software Compatibility: Training Peaks, Strava, Garmin Training Center and others

Trail riding can be tough on your gear. The ends of your alloy cranks can take a lot of abuse as the trail rushes underneath you and your bike. Protect your cranks from any damage with Race Face crank boots - now made in a smaller version to fit most alloy MTB cranks. Made from a durable Race Face proprietary plastic blend, leave no doubt and go with the originator in crank end protection. Wrap it up and protect the tips.
Compatible with:
- Race Face
- Turbine Cinch
- Atlas Cinch
- Atlas (24mm Spindle)
- Turbine (24mm Spindle)
- Aeffect Cinch (175mm length ONLY)
- Most other popular alloy MTB cranks (except some alloy DH cranksets)

Shimano's Dura-Ace 11-Speed Hollowtech II Crankset has set the benchmark in strength-to-weight ratios, which is why it's proven itself at the highest echelon of competition. Made of cold-forged and CNC-machined aluminum, it has hollow crankarms and a hollow large chainring. Both chainrings also feature teeth perfectly designed to assist up- and down-shifts. Perhaps most unique is the 4-arm design that maximizes strength and rigidity where your pedal stroke is strongest. The result is legendary stiffness for awesome power transfer and precision shifting you'll love.

SRAM’s cranks are strong and tough, ready for any kind of ride. So it’s inevitable that pedal strikes and debris will chip away at the end of the crank. SRAM’s Carbon Crank Boot is an upgrade that combats the wear and tear that comes with hard riding. The boot protects the crank from surface damage and keeps the rider’s style perfectly intact.

Power to the people! Add the Pioneer Power meter to your existing Shimano crank. Pioneer's crankset-based power meters are simply some of the best power-monitoring systems on the planet, and the Upgrade Kit gives you the chance to add it to your existing crankset. At the heart of the Pioneer Power Meter System are two streamlined strain gauge monitors that can detect the slightest tangent and radial force direction as power is applied to the crank arms. This proprietary system detects the amount and the direction of force at 12 different points in each pedaling stroke for each leg, and allows you to fine tune your pedaling to find race-winning form. The Pioneer Power Meter Installation Kit comes with everything you need to package and send your existing Shimano crank to Pioneer for professional installation and calibration.
- Compatible with Shimano Dura-Ace 9000 or Ultegra 6800 (Right Side Cranks Only)
- Compatible Crank-arm Lengths: 165, 167.5, 170, 172.5, 175, 177.5, 180mm
- Fully Integrated Strain Gauge for force measurement
- Easy connectivity with ANT+ compatible Cycle Computers
- HDPower Metrics when connected to Pioneer Cycle Computers
- Lightweight Sensor Only 40 grams

SRAM’s cranks are strong and tough, ready for any kind of ride. So it’s inevitable that pedal strikes and debris will chip away at the end of the crank. SRAM’s Carbon Crank Boot is an upgrade that combats the wear and tear that comes with hard riding. The boot protects the crank from surface damage and keeps the rider’s style perfectly in tact.
- Injection molded plastic crank arm protection
- Perfect way to protect your carbon crank investment from scratches and dents from pedal strikes
- Material: Injection molded plastic
- Recommended Group: XX1, X01, XX, X0